User Manual
Table Of Contents
- Copyright Statement
- Federal Communication Commission Interference Statement
- 1.1 Advantages of VoIP to Businesses
- 1.2 SIP – Most Popular VoIP Protocol
- 1.3 VoIP-Friendly Networking Concepts
- 2.1 Operation Modes
- 2.2 Wireless Modes
- 2.3 Topologies of Network Application
- 3.1 Overview of WIFI-ATA
- 3.2 Key Features of WIFI-ATA
- 3.3 Outlook of WIFI-ATA
- 3.4 Web Configuration Environment
- 4.1 Quickly Setup (Setup Wizard)
- 4.2 Operation Mode
- 4.3 TCP/IP Settings
- 4.4 VoIP Settings
- 4.5 Wireless settings
- 4.6 Firewall settings
- 4.7 Management
- 5.1 How can I make a phone call?
- 5.2 How can I pick up the call waiting while I’m on the phon
- 5.3 How can I make a 3-way conference call?
- 5.4 How can I transfer a call to others?
- 5.5 Why can’t I login to the WIFI-ATA?
- 5.6 Why can’t I access the Internet?
- 5.7 Why can’t I make VoIP phone calls to others?
- 5.8 WIFI-ATA doesn’t respond correctly to key press sometime
4.4.2 SIP Advanced settings
SIP Advanced settings contain many other SIP parameters. Some will influence the
voice quality, like “Codec Priority” and “VAD”. Some must collocate with the SIP
server, like “Reg Expire” and “DTMF relay”. And some must collocate with the analog
phone, like “Volume”, “Gain”, “Flash Time”, and “Country”.
Codec Priority
：Codec stands for Coder / Decoder which converting your voice into
VoIP packets. Through codec, it can compress the size of your voice and transmitting
on the Internet efficiently. WIFI-ATA supports ITU-T standards, G.711 u-law, G-711
a-law, and G.729. If G.711u-law or G.711 u-law is in use, the voice quality will be very
good. However, you need a plenty of bandwidth. If you find the voice is discontinued
all the time, probably the bandwidth is not enough for support G.711 u-law or a-law. In
such case, please set G.729 as higher priority. If you want to limit to use only specific
codec, just set all codec priorities as the same. For example：Set all codec priorities
as G.729 to use G.729 codec only.
VAD
：Voice Activity Detection, is used for saving the bandwidth consumption.
Normally, enabling VAD function can save around 50% traffic. Turn on the VAD
function can effectively solve the bandwidth problem.
Reg Expire
：It is about how long the registration is valid, and when the time interval is
expired, WIFI-ATA will resubmit the registration again to the SIP server.
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